Valve for air-brake safety appliances



Apr. 17, 1923.

H. C. STOKES VALVE FOR AIR BRAKE SAFETY APPLIANCES Original Filed Sent. 29,

Patented pr. 17, 1923.

" Unirse srarags raraarerrica.

HENRY o. STORES, or sui/LTER,- soU'rH CAROLINA.

VALVE FOR vAIR-IBll-AKE SAFETY APPLIANCES.

Original application led September 29, 1920, Serial No. 413,508. Divided and this application filed May To all whom t may concern.' y e Be it known that I, HENRY C. STORES, a citizen of the United States, residing at Sumter, inthe countyof Sumter and State of South Carolina, have invented certain new and useful Improvements in Valves for Air- Brake Safety Appliances, of which the following is a specification. e i

This application is a division of my pending applicationfor air brake safety appliances, Serial No. 413,508 filed Sept. 29, 1920, and patented July 19, 1921, Patent' Number 1,385,160. Y l The invention relates to air brake safety appliances, and more particularly to the valve structures in the means for applying the air brakes throughout the train in case any of the'brakes or brake beams on any of the trucks should become displaced.

Further features and details of the invention will appear as described in connection with the accompanyingl drawings and hereinafter Set forth and claimed.

Referring to the drawings forming a part yofthis specification, like numerals vof reference designate corresponding parts in the figures, in which, l

Figure l is a diagrammatic perspective view illustrating an application of my invention, and .y

`Figure 2 is a longitudinal sectional view of a valve Structure particularly adapted for use lin connection with the system illustrated in Figure 1. i

In Figure 1 of the drawings, themreferusual'train pipe employed in air brake sysf tems, and 11 representsl a valve which is connected with the train pipe by ,pipe 12- which may have a cut off cock 13.

A lever 14, pivoted to a projection 15Qon valve 11, is connected with a link 16, which in turn is connected with link 1 7, and bell crank levers 18 and 19.

The bell-crank levers, 18 and 19, each com. prise pivot rods'20, carried by hangers 21, which` arey adapted to be supported yOn-tlie car sillsv or in' any desired manner. `Lever arms 22, are mounted on the middle of these rods 20, for connecting them with the links 1 l'jand 17, anden the outer ends. of these rods larelever; arms 23, normallvhor-izpntal L' l brakes.` .Y ence numeral 10 indicates a section of the Serial No. 471,032.

and extending under the brake beams -24 and 25.`

The hangers 21 also carry rods 26, which provide a frame structure for supporting tfhpIbra-kes and brake beams if they should lThe valvell, heretofore referred to, is preferably made with.;- a two part ,casing comprising castings 27 and 28. These castings have iianges 29 and 30, respectively, which are' fastened together bybolts 31 retaining the partition members 32 and 33 between them. The member 32 is apertured and provided with a `conical or funnelshaped member 34 preferably formed integral therewith, providing a seat for the rod 37 which is connected with the lever 14, at its `other end. The partition or cross member 33 provides `a bearing through which rod 37 can reciprocate, and the end of t the casting 28 is apertured providing another bearing for rod 37. A valve spring 38 po- Aratchet teeth- 39 which are engaged by a'spring pressed pawl 40 for holding the valve 36 lopen lafter lever 14 has been actuated. An aperture 41 affords a vent for the valve and is of such a size as will permit the air in Vthe train pipe to escape slowly for e'ecting a gradual application of the lt will be apparent that if. any of the brakes should drop the lever arms 23 would be tilted down and drag on the link 16 and lever 14 to operate the valve 11 for letting air out of the train pipe for applyingthe brakes, and the frame structurewill support the members from falling to `the ground. In casethe link 16 oi' 17, or anyof the' operating mechanism should be broken during the operation, the spring pressed pawl` 40, cooperating with ratchet 39, prevents the valve rod 37- from being retracted until the pawl member has been manually withdrawn by operation of the handleon top of` the pawl. prevent the escape of air-1infcase.valve-}11 ,Shania become defective or inoperative.

The cut off cock 13 C ffmbej used -to valve 36 mounted on one end of the valve Having shown and described one embodiment of my invention I do not desire to have it confined` closely to. thespecie structure shoWn,.it beingundei'stoodthat changes may be made in form, proportion, and organization of its various parts Without departing from the spirit o'ffthe invention` asindi cooperating.-fwithsaid ratchet ,for h ol ing said-valve .penwbeng saidrod. been lac- .tfiliated, and ai. himdlez` onfsaid' paw'l fon re;- leasingi: it anda allowing. the. 'valveto close.l

.2; YA valve adapted yto: vbe..C .0'nn c ted With the-.train pipe of' an Vair brake'system `c0111- Iprising a t-'WoA pai-.t casing membenfone. of thercasing parts.- rovidedzivith an inlet port in its end and tie secondi casing part hav- .ing I.an outlet port, a partition member adaptedtobe positionedrbetwveen said casing parts andprovided with a valvev seat,

.means .for fasteningpthe casing parts-and partition. member together., 'a valve ineinbei'...co.operating .with Asai.d. v:i lve seat, a

' .,valve operating rodv Connected. with said valve member. and extendingfthmiigh .the casing. member, a spring on said rodifr `noi",- maiiy f.heidirig, thevaiife member dosed; ami 1 means for retaining. the: valve. openiip'ontie actuation.. ofjs'aid rod.

j a A 'vaiv'efadepteaio .be conieefeawith the train. pipe; ofan. air braliefsystem comprising a. casingl member having a?. chamber closed at one end andA providedvivith inlet u i I p the inlet port ink the first mentioned casing andoutlet portsia partition in the casing member separatingy said ports and carrying a y.valveseaty avalve member for cooperating with said" seat; a valve operating rodfcon- ,.nected Withthe v alve member and passing through Said .Clsed'end o f-'the chamber, ,a springfron said'rodffbr normally holding the valve member closed,E and ineansfoii. retain- 'the Valve open upon thev actuatinof said rod?.

- 4c.. A alvel 21.1..basing?ineiiit'ier vhaving inlet andy outlet p orts, aj partitioi i` in ,ii-i@ easing. member .Separating Said" peas .lia-ving' a, l`iort therethroiighvand provided a funnel' shaped meinber'extend `ing ne,

hepartition to' the Wall thea; valvemembergcooperatiniwith; said tunnel .ghapdiineinbeiia; it` a'irdf; a "ive, operating: rod CQDDQCCB it toward having inlet and outlet ports, a partition in said casing member separating said ports' and having a port therethrough providedwith a valve seat, a valve member co operating` with said seat, a valve operating; rod connected with the valve member and er tending therefrom through the port in said partition and through the casing7 and a second partition 'member' on the other side ot ysaid partition fromtlie vvalve member proY videdwith a lport* corresponding -with the port in the irst partition member and having a member .extending across said port having an aperture through which Said oper-V ating rodpass'es as a giiide.- 6 A valve comprising a tivo` part casing .membenfoine ofjthecasing parts provided with an inlet port in its end and the second Vthrougrhv the port in thepartition member 1 and through the second casing part for-operating the valve member to and from its seat, and second partition member between the aforesaid partition meinberand the second ii-cross the yportin the first partition and provided With an aperture throughf which said reciprocatory rod -passes as a guide..`

basing part having a member extending 7. A valve comprising-.a two part` casing `ineinbe-r, one of the casing partsprovided with an inlet port iii'iits endandthe`secOnd casing part haringen outlet port,`a partition menriber adapted to be` positioned between saidy casing parts andhavingan aperture therethrough with a valve Vseat facing j iort, a valve member `for cooperating with said seat, a valve operating Tod connected liio with Said valve member and extending d s ton'froinfsaid viilv'e andvalve seat andhavingy an aperture through which said valve rodi passes, .a stop member onsaid valve rod irifthinthe''second CaSiiigpait, anda spring positioned on. said rod bet-Ween said stop and said' cross member `for normally maintai ning the valve closed.

8. .A yvalve 'adapted to be connected vvitli i pipe of' an airbrale system comprising c a'si'nginember having an inlet port adapted@ to; be connected wv'ith the-- airl line of brake systeme-iid a relatively small outlet gradual' escape 'of air thr i from he-y ca'sii'i'g, a partition :ies

rounding said port, a valve member ooopen ating with said valve seat for shutting off 1o the communication between the chambers, and a Valve rod connected with said valve member for operating it towardand away from Said valve seat.

In testimony whereof I ailx my signature. 15

HENRY C. STOKES. 

